JP3010509U - Grating - Google Patents

Abstract

(57) [Summary] [Purpose] To provide grating that prevents pedestrians from sliding down. In the grating 1 which is covered with the opening of the water collecting groove C and is flush with the ground surface, and drains rainwater on the ground surface into the water collecting groove C through the interstitial openings 1a, the grating 1 On the flat tread surface 121a of the metal frame member 12 that supports the grid plate 11 of FIG.
Is formed, and a small through hole 22 for drainage is further provided on the flat tread 121a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a grating, and more particularly to a grating having a non-slip function.

[0002]

[Prior art]

 A conventional example is shown in FIG. 13, and a concrete water collecting groove (side groove) C having a U-shaped cross section is provided with a rectangular steel grating 1 covering the opening. Such a grating 1 generally has a lattice plate 11, a frame member 12, and a crossbar 111 as main constituent elements. As shown in the figure, a large number of strip-shaped grid plates 11 are arranged at equal intervals in the longitudinal direction with a length equal to the opening width of the side groove C. Both ends of each lattice plate 11, 11, ... Are supported by the frame member 12 having an L-shaped cross section. Specifically, the lattice plates 11, 11, ... Are welded and fixed to the inner surface of the vertical wall 122 of the frame member 12. In the frame member 12, the horizontal wall 121 bent outward is placed on the left and right top surfaces of the side groove C. A cross bar 111 is fixed to the upper surfaces of the lattice plates 11, 11, ... Which are continuous in the longitudinal direction to form a lattice shape together with the lattice plate 11, and the grating 1 having drainage property is completed. The surface of the grating 1 is flush with the ground surface (road surface) (not shown), and rainwater on the road surface is drained into the gutter C through the openings 1a between the grating plates 11 of the grating 1. Such a grating 1 is well-drained, and has recently become widespread as a cover for rainwater gutters around stores such as supermarkets and convenience stores, as well as around various facilities such as hospitals and their parking lots.

[0003]

[Problems to be solved by the device]

 However, in the grating 1, the flat tread surface 121a of the frame member 12 is a flat surface having a width of usually 25 mm to 50 mm and is a metal surface, so that a pedestrian or the like can easily slip and fall. Was there. When wet with rainwater, the coefficient of friction of the tread decreased sharply and tended to be more slippery. As a result, cases of pedestrian falls have become noticeable along with the widespread use of grating. In addition, it has been regarded as a problem because it has led to fracture accidents in the elderly and the advent of an aging society.

The present invention solves the above problems, and an object of the present invention is to provide a grating that prevents a pedestrian from sliding down.

[0005]

[Means for Solving the Problems]

 The gist of the first aspect of the present invention is a grating which is covered with an opening of a water collection groove and is flush with the ground surface, and drains rainwater on the ground surface through interstitial openings into the water collection groove. The grating is characterized in that a large number of non-slip projections are formed on the flat tread of a metal frame material that supports the grid plate.

In the grating according to the second aspect of the present invention, the anti-slip projections according to the first aspect have a height of 1. The value is set within the range of 5 mm to 3.0 mm, and the diameter is formed within the range of 5 mm to 20 mm. Here, the "diameter" refers to the maximum straight line distance formed by the anti-slip projection when the anti-slip projection is not circular in plan view. The third aspect of the present invention is a grating in which the anti-slip projections according to the first or second aspect of the present invention are press-formed on a frame material. The fourth invention is a grating in which a pointed portion is further formed on the top of the anti-slip projections according to the first to third inventions.

The gist of the fifth aspect of the present invention resides in a grating having through holes for drainage provided on the flat tread surface according to the first to fourth aspects. Further, in the grating of the sixth aspect of the present invention, the through small hole according to the fourth aspect is provided at least in a region near the non-slip protrusion. And, the gist of the seventh invention resides in a grating in which the through small hole according to the fifth invention is provided at least on the top of the anti-slip projection.

[0008]

In the grating according to the first aspect of the present invention, a large number of anti-slip projections are provided on the flat tread surface of the metal frame member, so that the friction coefficient becomes large. And, even if a pedestrian is about to fall, the anti-slip protrusions lock the shoe sole and stop the slip. In the grating of the second invention, the size of the anti-slip protrusions does not give a pedestrian a feeling of strangeness, and effectively prevents slipping. If the non-slip projections are formed by press molding as in the third invention, the grating can be easily manufactured. Like the grating of the fourth invention, if a pointed portion is provided on the top of the non-slip protrusion, a further anti-slip effect can be achieved. In addition, when the through hole is provided in the flat tread like the grating of the fifth invention, rainwater on the flat tread is smoothly discharged through the through small hole, so that even in rainy weather, The decrease in the friction coefficient of the flat tread is small. As in the sixth invention, if a small through hole is provided in the area close to the anti-slip protrusion, rainwater etc. on the tread will be discharged more efficiently and it will help prevent slippage. As in the seventh invention, if a small through hole is provided on the top of the anti-slip protrusion, not only the drainage of rainwater but also the corners of the hole opening peripheral edge exert an additional anti-slip effect.

[0009]

【Example】

 Hereinafter, the present invention will be described in detail based on embodiments. (1) First Embodiment FIG. 1 shows an embodiment of the grating 1 according to the present invention. 1 is a partial perspective view of the grating, FIG. 2 is an end view of the frame material, and FIG. 3 is a side view of the frame material. The basic structure is the same as the conventional product. A large number of lattice plates 11, 11, ... Are fixedly supported at intervals in the longitudinal direction between the L-shaped angle frame members 12 arranged on the left and right, and a rectangular lattice opening 1a is provided between the lattice plates 11. To form. Both ends of each grid plate 11, 11, ... Are welded and fixed to the inner surface of the vertical wall 122 of the frame member 12. Further, a cross bar 111 which is formed by twisting rod members each having a substantially square cross section is fixed by connecting the center of the upper surface of the lattice plate 11.

In the manufacturing process of the grating 1, generally, strip-shaped lattice plates 11, 11, ... Which are vertically arranged in the width direction are arranged in parallel. Then, the crossbar is placed orthogonally to the lattice plate 11. Next, a current is passed from one side to the other side, and a large current is concentrated on the junction to heat it. After that, the cross bar 11 is embedded and fixed in the lattice plate 11 by pressure contact. Then, it is divided according to the application, and the L-shaped angled frame members 12 are welded and fixed to both sides of the divided parts, and the product is used for the grating 1 as a product.

In this embodiment, a large number of anti-slip projections 13 are formed on the horizontal wall 121 of the frame member 12 which is an L-shaped angle and project in a dome shape above the flat tread surface 121a at intervals in the longitudinal direction. There is. As shown in FIGS. 2 and 3, the anti-slip protrusion 13 is formed by bulging and deforming a part of the horizontal wall 121 of the frame member 12 upward by press molding or the like. The reason why the press molding is used is that a commercially available L-shaped angle can be used as the frame member 12 and the anti-slip projections 13 can be easily manufactured. The height H of the non-slip protrusions 13 is in the range of 1.5 mm to 3.0 mm, and more preferably in the range of 1.5 to 1.7 mm. If the height H of the non-slip protrusions 13 is less than 1.5 mm, the effect of engaging the shoe sole or the like to suppress slippage cannot be expected, while the height H exceeds 3.0 mm. As a result, the unevenness of the non-slip protrusions 13 is felt by the body as it hangs on the sole. Also, if the height H of the anti-slip projections 13 exceeds 3.0 mm and becomes too high, the anti-slip projections 13 will rather stagnate. When the height of the anti-slip projections 13 is set in the range of 1.5 to 1.7 mm, the friction coefficient increases, and the anti-slip projections 13 are hard to feel the unevenness while maintaining the anti-slip effect. . In addition, it is relatively easy to manufacture by press molding, and the product cost can be kept low. The diameter D of the anti-slip protrusion 13 is in the range of 5 mm to 20 mm, and more preferably in the range of 7 mm to 10 mm. If the diameter D is less than 5 mm, the number of the anti-slip projections 13 must be increased, and the diameter D is too small, so that the anti-slip function tends to be difficult to exert. On the other hand, when the diameter D exceeds 20 mm, the slip surface formed by the anti-slip projections 13 itself becomes large, and the slip suppressing effect is weakened. When the diameter D is in the range of 7 mm to 10 mm, it is easy to manufacture and the anti-slip projections 13 effectively fulfill the role of preventing slip. The L-shaped angle forming the frame member 11 has a plate thickness of about 1.5 mm, and the width of the vertical wall 122 and the horizontal wall 121 thereof is within the range of 25 mm to 50 mm depending on the size of the lattice plate 11. It is selected appropriately.

In the grating 1 configured as described above, the anti-slip projections 13 increase the coefficient of friction, and moreover, the anti-slip projections 13 have a function of preventing slippage by engaging the shoe sole well without giving an uncomfortable feeling when passing. Even when the flat tread 121a is wet with rainwater or the like, the coefficient of friction is kept large to prevent the pedestrian from sliding down.

(2) Embodiment 2 Various shapes of the anti-slip projections 13 can be applied. In this embodiment, as shown in FIG. 4, the anti-slip projections 13 have a circular flat projection 14 in plan view. It was done. Other configurations are similar to those of the first embodiment. As shown in the figure, by using the cylindrical flat protrusions 14, the same anti-slip effect can be obtained even when a pedestrian walks from any direction. Since the corners are formed on the edges, it is excellently locked to the sole of the shoe, etc., and further helps prevent slippage.

(3) Embodiment 3 In this embodiment, as the anti-slip projections 13, elongated projections 15 having a predetermined length as shown in FIG. 5 are adopted and arranged in a zigzag pattern. By arranging the projections 15 in a staggered arrangement, the same effect as that of the second embodiment is obtained. The other configuration is the same as that of the first embodiment.

(4) Embodiment 4 In this embodiment, as shown in FIG. 6, elongated protrusions 16 having a predetermined length are arranged in a flower shape and are repeatedly formed in the longitudinal direction at regular intervals. The protrusions 16 have substantially the same shape as the protrusions 15 according to the third embodiment, and the arrangement pattern is changed. Therefore, the same effect as that of the third embodiment is obtained, and a pattern having a functional beauty is added to the flat plate-shaped tread surface 121a on the front side of the grating 1, which is excellent in design. The other configurations are the same as those in the first embodiment.

(5) Fifth Embodiment In this embodiment, as shown in FIG. 7, the non-slip projection 13 is a flat projection 17 having a substantially rhombic shape in plan view. The same effect as that of the third embodiment is obtained. In addition, in the present embodiment, the protrusion of the flat protrusion 17 is formed of an inclined surface, which helps to prevent the flat protrusion 17 from being caught and to reduce the stumbling during walking. The other configuration is the same as that of the first embodiment.

(6) Embodiment 6 In this embodiment, as shown in FIG. 8, the anti-slip projections 13 are flat projections 18 which are substantially star-shaped in plan view in consideration of the design. The same effect as that of the fourth embodiment is obtained. The other structure is substantially the same as that of the first embodiment.

(7) Example 7 In this example, as shown in FIG. 9, a pointed portion 20 is further formed in the center of the upper surface of the anti-slip protrusion 19 which is circular in plan view. In such a grating 1, the friction coefficient of the flat tread surface 121a is increased by the anti-slip projections 19 and the pointed portions 20, and an excellent effect of preventing a pedestrian from falling is exhibited.

(8) Example 8 The pointed head 20 of Example 6 can be provided on the anti-slip protrusions of various shapes. For example, as shown in FIG. It can also be formed in the center of the top surface.

(9) Ninth Embodiment In this embodiment, as shown in FIG. 11, a large number of small through holes 22 are provided in the flat tread 121a of the frame member 12 having the anti-slip projections 13 formed thereon. The through hole 22 has a diameter of about 5 mm to 10 mm. The diameter of the small through hole 22 is set to about 5 mm to 10 mm. If the diameter is smaller than 5 mm, the grating 1 is installed outdoors, so that dust is likely to be clogged. This is because there is concern about a decrease in strength. The rainwater on the tread 121a is smoothly discharged to the back side of the horizontal wall 121 by these small through holes 22. By forming the small through hole 22, the rainwater does not stay on the tread surface 121a, so that the flat tread surface 121a easily becomes a dry surface, and in combination with the anti-slip projection 13, complete slip prevention can be achieved.

In particular, as shown in FIG. 12, if a small through hole 22 A is provided in the vicinity of the anti-slip projection 13, rainwater on the projection is efficiently drained and the anti-slip effect of the anti-slip projection 13 is assisted. To be done. Further, as shown in the figure, if a small through hole 22A is provided at the top of the anti-slip protrusion 13, in addition to the drainage effect, the corners of the opening peripheral edge also provide an anti-slip effect.

It should be noted that the present invention is not limited to the one shown in the above embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, material and the like of the lattice plate 11, the frame member 12, the cross bar, the flat tread surface 121a, the small through holes 22, the non-slip protrusions 13 and 19 are appropriately selected according to the application.

[0023]

[Effect of device]

 As described above, the grating of the present invention can effectively prevent a pedestrian or the like from slipping on the tread surface of the frame material, and has a great effect in improving safety.

[Brief description of drawings]

FIG. 1 is a partial perspective view of grating in a first embodiment.

FIG. 2 is an end view of the frame member of FIG.

FIG. 3 is a side view of the frame member of FIG.

4A and 4B are a partial plan view and a partial side view of a frame member according to a second embodiment.

5A and 5B are a partial plan view and a partial side view of a frame member according to a third embodiment.

6A and 6B are a partial plan view and a partial side view of a frame material according to a fourth embodiment.

7A and 7B are a partial plan view and a partial side view of a frame material according to a fifth embodiment.

8A and 8B are a partial plan view and a partial side view of a frame member according to a sixth embodiment.

9A and 9B are a partial plan view and a partial side view of a frame member according to a seventh embodiment.

10A and 10B are a partial plan view and a partial side view of a frame member according to an eighth embodiment.

FIG. 11 is a partial perspective view of grating in Example 9.

FIG. 12 is an enlarged cross-sectional view around a non-slip protrusion of FIG.

FIG. 13 is an overall perspective view of a prior art grating installed in a gutter.

[Explanation of symbols]

 1 Grating 1a Inter-grating opening 11 Lattice plate 12 Frame material 121a Flat tread 13,19 Non-slip protrusion 20 Spiral head 22,22A, 22B Penetration small hole C Water collection groove

Claims (7)

[Scope of utility model registration request] 1. A grating plate, which is covered with an opening of a water collecting groove and is flush with the ground surface, and drains rainwater on the ground surface into the water collecting groove through an inter-grating opening in the grating. Grating characterized in that a large number of non-slip projections are formed on a flat tread surface of a metal frame material that supports the. 2. The height of the non-slip protrusion is 1.5.
mm-3.0 mm, and the diameter is 5
The grating according to claim 1, wherein the grating is formed with a value within a range of mm to 20 mm. 3. The grating according to claim 1, wherein the frame material is press-molded to form the anti-slip projections. 4. The grating according to claim 1, further comprising a pointed portion formed on the top of the non-slip protrusion. 5. The grating according to claim 1, wherein a through-hole for drainage is provided on the flat tread surface. 6. The grating according to claim 5, wherein the through small hole is provided at least in a region near the non-slip protrusion. 7. The grating according to claim 5, wherein the through small hole is provided at least on the top of the non-slip projection.